Wisconsin

Across Wisconsin, GIS Map currently maps 51 cities and towns that together hold around 2,474,343 residents. America's Dairyland offers Great Lakes beauty, cheese, beer, and Midwestern friendliness. The most populous community is Milwaukee, with about 566,973 residents in Milwaukee County, and it has an interactive street, satellite and topographic map. Madison (278,001) and Green Bay (106,253) follow. The state capital, Madison, sits in Dane County.

County-level coverage in Wisconsin includes 72 official Census boundaries, each paired with local demographics. Milwaukee County is the most populous, with about 926,331 residents. The highest median household income belongs to Waukesha County at $106,076. By land area, Marathon County is the largest at roughly 1,545 square miles. The youngest population, with a median age of 34.3, is found in Menominee County. Among mapped cities with at least 10,000 residents, Brookfield reports the highest median household income at $129,548. All figures come from the U.S. Census Bureau's American Community Survey 2020-2024 five-year estimates.

The terrain in Wisconsin changes noticeably from place to place. Eagle River is the highest at about 1,647 feet above sea level, while Green Bay is the lowest at about 588 feet. Every mapped city observes Central Time. According to the USDA U.S. General Soil Map, Alfisols are the dominant soil order beneath 32 of the mapped city centers. Federal records list 4 government-owned and 100 leased properties in these cities, the most in Madison. City maps let you switch on FEMA flood zones, USGS contours and land cover layers.

We also map 121 ZIP code areas in Wisconsin, each with its boundary and demographics. The most populated one has about 58,146 residents. The runner-up counts roughly 51,279 people. The densest packs about 20,356 people per square mile. Every page includes drawing and measuring tools plus a click-anywhere inspector that reports the county, ZIP, census tract, school district, flood zone and elevation of any point.